Cultures of Energy: Power, Practices, Technologies

2013 | ISBN-10: 1611321654, 1611321662 | 352 pages | PDF | 3 MB

This path-breaking volume explores cultures of energy, the underlying but under-appreciated dimensions of both crisis and innovation in resource use around the globe. 

Electrical Studies For Trades, 5th edition

                            Electrical Studies For Trades, 5th edition

2013 | ISBN-10: 113327823X | 608 pages | PDF | 63 MB

Packed with real-world examples, vivid illustrations, and the latest developments from the field, "Electrical Studies for Trades, 5th Edition" is ideal for current

Teach Yourself PIC Microcontrollers for Absolute Beginners

          Teach Yourself PIC Microcontrollers for Absolute Beginners

English | ISBN: n/a | 147 pages | PDF | 3.11 MB

This book, is an entry level text for those who want to explore the wonderful world of microcontrollers. Electronics has always fascinated me, ever since I was a child, making small crystal radio was the best project I still remember. 

Red Rover: Inside the Story of Robotic Space Exploration, from Genesis

ISBN: 0465055982 | 2013 | EPUB | 256 pages | 3 MB

In its eerie likeness to Earth, Mars has long captured our imaginations?both as a destination for humankind and as a possible home to extraterrestrial life. It is our twenty-first century New World; its explorers robots, shipped 350 million miles from Earth to uncover the distant planet��s secret

Arduino Workshop: A Hands-On Introduction with 65 Projects

ISBN: 1593274483 | 2013 | PDF | 392 pages | 10 MB

Learn the Basics, Build the Projects, Create Your Own
The Arduino is a cheap, flexible, open source microcontroller platform designed to make it easy for hobbyists to use electronics in homemade projects. With an almost unlimited range of input and output add-ons, sensors, indicators, displays, motors, and more, the Arduino offers you countless ways to create devices that interact with the world around you. - April 2013

English | 164 Pages | True PDF | 176.79 Mb

Concentrating solar power technology: Principles, developments and applications

2012 | 708 Pages | ISBN: 1845697693 | PDF | 11 MB

Concentrating Solar Power (CSP) Technology represents one of the most advanced renewable energy systems capable of large scale power production. By concentrating direct sunlight using mirrors and/or lenses, much higher operating temperatures are achieved, allowing existing solar technologies to covert energy at much higher efficiencies than usual

Make: Technology on Your Time Volume 33

English | ISBN: 1449327656 | 2013 | PDF | 160 pages | 25 MB

MAKE Volume 33 has great projects for makers of all skill levels Arduino projects, internet gadgets, food, music, personal fabrication, astronomy, electronics, and more. In our special Codebox section you'll learn about software of interest to makers, including circuit board design, 3D CAD and printing, microcontrollers and creative coding, and programming for kids, featuring Microsoft's SmallBasic, Scratch, and the extremely popular Kickstarter-funded project Makey Makey. And you'll meet fascinating makers, like the maniacs behind the popular Power Wheels Racing events at Maker Faire.

Electronic Letter Box

Electronic Letter Box

The circuit illustrated below is used as an electronic letter box. When letter is kept in this box then a LED glows which indicates that letter is inside the Box.
   This circuit uses a popular timer I.C which is 555. I.C 555 is connected as comparator with pin 6 connected  with positive  supply, the output goes high-1 when the trigger pin 2 is at lower than 1/3 level of the supply voltage. Conversely the output goes low-0 , when it is above 1/3 level. So small change  in  the voltage of pin 2 is enough to change  the output of  pin 3 from 1 to 0 and 0 to 1. The output has only two states high and low and can not remain in any intermediate stage. It is power by 9V battery for portable use. The circuit is economic in power consumption. Pin 4,6&8 is connected to the positive supply and pin 1 is grounded.